CVE-2025-11955

Incorrect validation of OCSP certificates vulnerability in TheGreenBow VPN, versions 7.5 and 7.6. During the IKEv2 authentication step, the OCSP-enabled VPN client establishes the tunnel even if it does not receive an OCSP response or if the OCSP response signature is invalid.

CVSS 4.0

8.2CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS

0.2% chance of exploitation in the next 30 days; higher than 11% of CVEs (scores of 2026-10-25)

CWE

CWE-299

Published

2025-10-27

Modified

2026-10-08

Record from

the NVD, synced 2026-10-19

References

• https://www.incibe.es/en/incibe-cert/notices/aviso/incorrect-validation-ocsp-certificates-thegreenbow-vpn-client-windows
• https://www.thegreenbow.com/en/support/security-alerts/

Check your stackJSON